Baby Todd is a real phenomenon caused by kids not being able to say complex words. You want to say those complex words to them and they will repeat them back and they may make a baby version of it which is fine but it’s good to for you to keep using the complex words and the correct pronunciation so they learn.
Every one of my kids has a name that is hard for a baby to pronounce so they have a baby nickname, but we let them grow out of it.
How does this have anything to do with the culture war? This is just a discussion of culture and how its changing unrelated to what you are referring to.
I'm not denying the phenomenon exists. But to try to say that adults would be upset if teachers spoke to their children like they weren't developmentally challenged is completely ridiculous.